Firefighter Sean Cummins, who is from Dublin, and EMT Niall O’Shaughnessy, from Limerick, were thrilled when they realized Mary Downey, was alive and alert after drunkenly tumbling onto the tracks Sunday morning.

As the two men worked to get Downey, 22, off the tracks and to Bellevue Hospital, they learned they all had something in common — their Irish backgrounds.

“What is this, an Irish reunion?” a responding cop joked when he heard the three talking about their hometowns.

Downey, an immigrant living in The Bronx, staggered into the 49th Street Station near Seventh Avenue around 6 a.m. and toppled onto the tracks. She defied death by lying flat between the rails and then rolling into a tiny space under the platform.